Frontline Spray for Dogs & Cats can be applied directly for both immediate and long-lasting control of fleas and ticks for up to 30 days. This effective spray contains fipronil to kill existing flea and tick infestations. It also kills fleas before they lay eggs, effectively preventing reinfestation. Safe for puppies and kittens 2 days of age or older, Frontline Spray helps reduce flea and tick infestations in multi-pet households, and is great for the initial treatment of flea allergy dermatitis. The spray bottle is easy to use, provides fast and even application and can be reapplied regularly. Fleas Kills Fleas Kills newly emerged adult fleas before they lay eggs Stops existing infestations and prevents establishment of new infestations Kills fleas which may cause flea allergy dermatitisLice Rapidly eliminates chewing lice infestationsMites Aids in control of sarcaptic mange infestations in dogsTicks Kills all life stages of ticks (larva, nymph and adult), including brown dog ticks (Rhipicepalus sanguineus), American dog ticks (Dermacentor variabilis), lone star ticks (Amblyomma americanum) and deer ticks (Ixodes scapularis). Kills ticks that may transmit Lyme disease, Rocky montain spotted fever, ehrlichiosis, babesiosis, anaplasmosis, haemobartonellosis and other tick-borne diseasesFrontline Spray is great for controlling emergency flea infestations as well as for regular use and along with with other monthly flea and tick medications like Frontline Top Spot, Frontline Plus, or Advantage. Frontline Sprays do not contain the potentially toxic insecticides found in most pet store sprays.